Theory for inelastic neutron scattering in orthorhombic high-Tcsuperconductors

2005/10/31 by Andreas P. Schnyder, Dirk Manske, Christopher Mudry +1 · 1 citation
Engineering · Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.73.224523

published as Phys. Rev. B 73, 224523 (2006) · 8 pages, 8 figures

arxiv created 2006/06/05 · openalex publication_date 2006/06/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

Abstract

Using a Fermi-liquid-based theory we calculate the in-plane anisotropy of the spin susceptibility \ensuremathχ(\mathbitq,\ensuremathω) for hole-doped high-T_c cuprates. Employing the two-dimensional one-band Hubbard model and a generalized RPA-type theory we consider anisotropic hopping matrix elements (t_x\ensuremath≠t_y) and a mixing of d- and s-wave symmetry of the superconducting order parameter in order to describe orthorhombic superconductors. We compare our calculations with available inelastic neutron scattering data on untwinned YBa₂Cu₃O_6+x and find good agreement. Furthermore, we predict a strongly anisotropic in-plane dispersion of the resonance peak.

Citations

• Evolution of the resonance and incommensurate spin fluctuations in superconductingYBa2Cu3O6+x
• Magnetic Excitations in a Bond-Centered Stripe Phase: Spin Waves Far from the Semiclassical Limit

Cited by

• Theory of reduced singlet pairing without the underlying state of charge stripes in the high-temperature superconductorYBa2Cu3O6.45